Tensilica’s Dolby Digital Compatible Output Encoder Application Package

The Dolby Digital Compatible Output Encoder (DDCO) for the Xtensa HiFi 2 Audio Engine implements 5.1-channel encoding for the design of consumer devices.

The encoder is a fixed-point implementation written in C and available in object code. Included documentation describes how to incorporate the decoder into a system. Using this package, system developers can integrate an AC-3 encoder into an SOC without the need for additional optimizations or software development. The same Xtensa HiFi 2 Audio Engine is used for other Tensilica audio codecs, enabling the development of highly optimized multi-standard audio SOC designs.

Feature Summary

• 5.1-channel encoding
• Supports all standard down-mix modes
• Supports the full range of bit and sample rates
• Fully compliant with Dolby Laboratories compliance testing

Specifications - 5.1-Channel encoding - 640 Kbps, 48 KHz

* Average MHz required for single-cycle memory.
** Total RAM includes persistent, stack and scratch.